Motor proteins or molecular motors are enzymatic molecules that actively participate in all major biological processes such as cellular transport, cell division, transfer of genetic information, synthesis of proteins, cell motility and signaling [1]}, [2]}, [3]}, [4]}, [5]}, [6]}. They transform chemical energy from specific reactions that they catalyze (usually, hydrolysis or biopolymerization) into mechanical work to support their functions. For example, the directed motion along linear cytoskeleton filaments by kinesin, myosin and dynein motor proteins is fueled by the hydrolysis of adenosine triphosphate (ATP) [6]}. Biological molecular motors have been intensively studied in recent years, and currently the single-molecule dynamics of motor proteins is well described [4]}, [5]}, [10]}. Although the properties of individual molecules are very useful, in biological systems motor proteins typically function in large teams. This underlines the importance of understanding the collective behavior of molecular motors [11]}, [5]}, [13]}.
